Water near the equator is warmer than water at the poles. Which sentence explains why? A. Deep-sea vents pump steam into oceans unevenly.
B. Upwellings spew warm water toward the equator.
C. The sun heats Earth and its oceans unevenly.
D. Dense, salty water tends to hold more heat.

dense,salty water tends to hold more heat

what have scientists found to be the most efficient and effective way to insert new sequences into an individual? a-scientists have created genetically altered foods that release dna during digestion. b-scientists use viruses to insert specific gene sequences. c-scientists irradiate genes so that they can be absorbed through the skin.

a community that experiences major changes undergoes progress